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Behavior Vector Shape - Create Saw Wave

Added on 2/7/2006

 

Compatibilities:
D8 D8_5 D9 Mac PC

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Author: Chunick (website)

Create a saw wave shape with this custom handler. It returns a vertex list. Pass the width and height of the wave from crest to crest, the number of waves, the direction (between -1 and 1), the start as a boolean value (0 or 1) and autoSize as a boolean as well. AutoSize will allow you to specify an overall width and height and it will figure out the size of the waves for you based on the number of waves, the width and the height.

on createSawWave (width, height, waves, direction, start, autoSize)
  
  vertList = []
  
  if autoSize then
    w = width / float(waves)
  else  
    w = width
  end if
  
  pts = waves * 2
  hw = w / 2
  qw = w / 4 * direction
  
  repeat with i = 0 to pts
    x = hw * i
    if i mod 2 = start then
      vertList.add([#vertex: point(x + qw, height)])
    else
      vertList.add([#vertex: point(x, 0)])
    end if
    
  end repeat
  
  return vertList
  
end

 


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